26 lines
749 B
TypeScript
26 lines
749 B
TypeScript
import { useFocusEffect } from '@react-navigation/native'
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import { useCallback, useState } from 'react'
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import { NativeEventEmitter } from 'react-native'
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import { TickEvent } from './TimerPage'
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export default function useTimer() {
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const [minutes, setMinutes] = useState('00')
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const [seconds, setSeconds] = useState('00')
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useFocusEffect(
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useCallback(() => {
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setMinutes('00')
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setSeconds('00')
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const emitter = new NativeEventEmitter()
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const listener = emitter.addListener('tick', (event: TickEvent) => {
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console.log(`${useTimer.name}.tick:`, { event })
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setMinutes(event.minutes)
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setSeconds(event.seconds)
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})
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return listener.remove
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}, []),
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)
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return { minutes, seconds }
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}
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